Backrest



FIG. 1 is a perspective view of a backrest;

FIG. 2 is a left side view of the backrest shown in FIG. 1;

FIG. 3 is a right side view of the backrest shown in FIG. 1;

FIG. 4 is a front view of the backrest shown in FIG. 1;

FIG. 5 is a rear view of the backrest shown in FIG. 1;

FIG. 6 is a top view of the backrest shown in FIG. 1; and,

FIG. 7 is a bottom view of the backrest shown in FIG. 1.

The broken lines showing various aspects of a chair to which the backrest is affixed in FIGS. 1-7 are for environmental purposes only and do not form any part of the claimed design. 

The ornamental design for a backrest, as shown and described. 